Frank kortick



No. 6I7,|05. Patented Jan. 3, "399. F. KOBTIGK.

PICK.

(Application filed Mar. 4, 1898.)

(No Model.)

llNirnn'STAins PATENT FRANK KORTIOK, OF SAN FRANCISCO, CALIFORNIA.

PICK.

SPECIFICATION forming part of Letters Patent No. 617,105, dated January3, 1899. Application filed March 4, 1898. erial No. 672,562. (No model.)

To all whom it may concern:

Be it known that I, FRANK KORTICK, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Picks; and I hereby declare thefollowing to be a full, clear, and exact description of the same.

My invention relates to a locking device for removable pick-points, forsafety-hook attachments, and like devices.

It consists, essentially, of a head having a shank projectingessentially at right angles therewith, a tongue or yoke passing throughthe shank with the ends pressing upon the parts to be locked, and aremovable key passing through the head and pressing upon the tongue oryoke to retain it in place.

It also consists in details of construction which will be more fullyexplained by reference to the accompanying drawings, in which- Figure 1is a front View of my pick. Fig. 2 is a lateral vertical section of thesame. Fig. 3 shows the locking device attached to a hook.

A is the head, and B the shank, which is slotted parallel with the head,and when used for a pick is extended and made in two parts or socketedso as to receive the handle G, which is riveted or otherwise secured tothe shank. The head A comprises two arms extending transversely acrossthe end of the shank, so as to resemble the letter T. One or both endsof the head portion have grooves or channels made in them, as shown atD, and these are adapted to receive the shanks of the parts E to belocked which lie in these grooves or channels, extending interior to theparts of the head A, against which the outer faces of these shanks lie.The inner ends of the parts E are beveled, as shown at e, and thesebeveled points are fitted into correspondingly-shaped sockets a, madejust at the junction of the head A with the end of the shank B andextending into the sides of the shank, so that the points c Wheninserted into these sockets a will be prevented from any side motion,while that portion of the part E which passes through the channels D atthe outer ends of the heads A will in the same manner be prevented fromside movement. The part or parts E being inserted are secured in placeby means of a curved yoke F, which passes through the shank B from sideto side, and the ends rest against the inner faces of the parts E, so asto press them against the inner faces of the head A.

G is a key which is fitted into a key-slot I-I, made through the shank Bat right angles with the position of the yoke F, and when this key hasbeen driven into the slot it presses upon the arch of the yoke, thus:forc ing the ends strongly against the parts E and holding them firmlyin place.

The locking of the inner ends 6 and the body of the part E by means ofthe channels D at the end of the head prevents any side movement, whilethe yoke keyed against the parts E holds them solidly against the headA, thus forming a very rigid and solid structure for use, While theparts are readily detached by simply driving out the key.

When employed for picks, it will be manifest that short or long points,sharp, chisel, shovel, or edge of any desired form for use with such animplement, may be introduced and locked to the head and as easilyremoved therefrom.

lVhen used in conjunction with a safetyhook, the outer end of the part Eis made to press against the point of the hook H, and thus close theopening, so as to prevent the hook being disengaged from anything withwhich it may be connected.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combinationwith a head and shank one disposed substantially atright angles to the other, one of said parts having a socket and a guideor slot, a part to be located, passing through the guide and having anend fitted to the socket, a yoke passing through the said other part andbearing on the part to be locked at a point between the guide or slotand socket of the first-named part, and means for securing the yoke inplace.

2. In a pick, a shank, a handle to which it is secured, a head formedwith and extending transversely across the end of the shank having opengrooves or slots made in the outer ends, V-shaped sockets made in theinterior of the head and at its junction with the shank, separablepick-points having the inner ends tapered to fit the said sockets Whilethe body portion passes through the exterior guides of the head, acurved yoke passin g through the shank with its ends pressing againstthe interior faces of the pick-points and a key and keyway through whichit is driven to press against the central curvature of the yoke wherebythe latter is forced against the pick-points to lock them in place.

3. A detachable locking device comprising a head and a slotted shank atright angles therewith, a part to be locked, one end of which engagesthe junction of the head and shank, and the other extends outwardlyalong the head, a yoke passing through the slotted I 5 shank with theend pressing upon the part to be locked, and a key passing through aslot in the shank transverse to the yoke and pressing thereon.

In witness whereof I have hereunto set my 20 hand.

FRANK KORTIOK.

Witnesses:

S. H. NOURSE, JESSIE O. BRODIE.

